Paint composition.



NELSON B. ARNOLD, OF WESTFIELD, NEW JERSEY.

PAINT COMPOSITION.

No Drawing.

To all whom it may concern:

Be it known that I, NELSON B. ARNOLD, a citizen of the United States,residin at \Vestfield, in the county of Union and tate of New Jersey,have invented new and use ful Improvements in Paint Compositions, ofwhich the following is a specification.

This invention relates to an improved paint compositiondesignedparticularlf for use as a finish for walls and ceilings.

The primary object of the invention is the provision of a wall finishwhich will resent a smooth, fiat, and washable suri ce, free from allglazed spots, and which may be as readily and conveniently applied asany ordinary paint composition, and from which grease and other stainsmay be readily removed.

The'composition is composed, primarily of a pigment and a vehicletherefor, combined in the proportions of about 70 per cent. pigment andper cent. vehicle. The pigment is com osed of about 7 3 per cent.ithopone and 2 per cent. extender comprising calcium sulfate and calciumcarbonate. By lithopone I mean an admixture of about 30 per cent. ofzinc sulfid and 70 per cent. of sulfate of barium which must beconjointly precipitated in water. The vehicle is preferably of about .33per cent. linseed oil and 67 per cent.- varnish.

I' have found that the highly desirable re- Specification of LettersPatent. Patented Mar. 22, 1910. Application filed :May 25, 1909. SerialNo. 498,186.

sults obtained by my invention require that the pigment be composed ofzinc sulfid and sulfate of barium conjointly precipitated in about theproportions stated.

The composition may be readily and easily applied to walls, delicatefinish free'from glazed spots, and may be subjected to hard usageWithout destroying its appearance so long as its physical properties arenot afl'ected.

I claim as my invention:

1. A flat finish composition consisting of about 70 per cent. pigmentand 30 per cent. vehicle, the pigment being composed of lithopone and anextender comprising calcium sulfate and calcium carbonate ground in thevehicle.

2. A flat finish composition consisting of about 70 per cent. pigmentand 30 per cent. vehicle, the pigment being composed vo about 73 percent. lithopone and 27 or cent. extender, the latter comprising calciumsulfate and calcium carbonate, and the vehicle being composed of oil andvarnish in which the pigment is ground.

In testimon whereof I affix my signature in presence 0 two witnesses.

NELSON BARNOLD. Witnesses:

T. M. LYNNCH, H. P. SoHonNBnRNnn.

and presents a flat,

